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Do you really understand the pesticide and fungicide Tetramethylthiuram Disulfide?

What is Tetramethylthiuram Disulfide (137-26-8)?

The fungicide Tetramethylthiuram Disulfide  is an organic compound with the chemical formula C6H12N2S4, cas137-26-8,It is a white crystalline powder, insoluble in water, dilute caustic alkali, gasoline, slightly soluble in ethanol, ether, soluble in benzene, acetone, chloroform, carbon tetrachloride, carbon disulfide, and dichloroethane. It can be heated with water to form dimethyl Amine and carbon disulfide are mainly used as fungicides, insecticides, antifungal agents, accelerators for nitrile rubber and other adhesives, lubricant additives, bacteriostatic agents and deodorants for soaps.

Tetramethylthiuram Disulfide is a low-toxic fungicide that can irritate skin and mucous membranes. It can treat fungal infections such as blight and is widely used as a plant fungicide and accelerator in the rubber industry.

The chemical name of Tetramethylthiuram Disulfide is tetramethylthiuram disulfide and accelerator TMTD. Tetramethylthiuram Disulfide is the earliest organically synthesized fungicide discovered by scientists. It is an organic sulfur fungicide that has been used in agricultural production for more than 80 years. Tetramethylthiuram Disulfide is a protective fungicide, a broad-spectrum protective Tetramethylthiuram Disulfide fungicide. It has good application scope for the control of downy mildew, blight, anthracnose, cereal smut, and seedling yellow wilt of a variety of crops. Industrial synthesis mainly includes peroxide synthesis method and air oxidation synthesis method. In addition, the process of using sodium hypochlorite as an oxidant and using electrophoresis method to synthesize accelerator TMTD has also been reported. The above synthesis methods generally have shortcomings such as high cost of synthetic products.

Tetramethylthiuram Disulfide (137-26-8) preparation

50% Tetramethylthiuram Disulfide wettable powder, 80% water-dispersible granules, 50% azoxystrobin · Tetramethylthiuram Disulfide WP, 70% Tetramethylthiuram Disulfide · Tetramethylthiuram Disulfide WP (20% chlorothalonil + 50% Tetramethylthiuram Disulfide)

Tetramethylthiuram Disulfide (137-26-8) principle

Molecular formula C6H12N2S4

CAS number:137-26-8

Molecular weight 240.44

Density: 1.29; 1.39～1.40 (20/4℃)

Melting point: 146～148℃

Flash point: higher than 300℃

Toxicity, the acute oral LD50 of the original powder is 780-865 mg/kg in rats and 1500-2000 mg/kg in mice. It has an irritating effect on the skin and mucous membranes. Toxic to fish, non-toxic to bees.

Features protective fungicide. The acute oral LD50 of the original powder in rats is 780-865 mg/kg, and the acute oral LD50 in mice is 1500-2000 mg/kg. Toxic to fish, non-toxic to bees.

The scope of application is good control of downy mildew, blight, anthracnose, cereal smut, and seedling yellow wilt of a variety of crops.

It is a broad-spectrum protective fungicide. Toxic to fish. Irritating to human skin and mucous membranes. High doses have a certain repellent effect on field mice.

Tetramethylthiuram Disulfide (137-26-8) function

The fungicide Tetramethylthiuram Disulfide is used as a seed treatment, soil treatment or spray. Use a dose of 0.125% (active ingredient) for seed dressing to prevent and control seedling blight and damping-off in cabbage, lettuce, melons, eggplants, broad beans, etc.; use a dose of 0.15~0.25% (active ingredient) for seed dressing to prevent and control rice seedlings. blight, cereal black spots, and pine seedling blight; 0.4% dose (active ingredient) in seed dressing to prevent and control pea and other blight diseases. Treat the soil with 3750~5625 grams of active ingredients per hectare (furrow application or hole application) to prevent and control seedling diseases of vegetables, tobacco, and sugar beets. 50% Tetramethylthiuram Disulfide wettable powder is sprayed with 500~800 times of water to control strawberry gray mold, pear scab, potato and tomato late blight, melon and vegetable downy mildew, grape powdery mildew, anthracnose, and white rot. Disease etc.

Advantages of Tetramethylthiuram Disulfide (137-26-8)

1. Thorough sterilization

The fungicide Tetramethylthiuram Disulfide has good control over downy mildew, blight, anthracnose, cereal smut, and seedling yellow wilt of a variety of crops.

2. Applicable to a wide range of crops

Field crops, fruit trees, vegetables, and cash crops are fully covered, and Tetramethylthiuram Disulfide can be used on basically all crops.

3. Various methods of pesticide application

The fungicide Tetramethylthiuram Disulfide can be applied in various ways, including foliar spraying, seed dressing, and soil treatment. Tetramethylthiuram Disulfide can also be made into toxic soil and applied in trenches or holes. To prevent and control apple tree rot, apply 300 to 500 grams of 10% ointment per square meter.

4. Prevent rats and rabbits

Apply 50% wettable powder 8 times to the trunks of young citrus, peach and other fruit trees to prevent hares and mice from nibbling.

Tetramethylthiuram Disulfide (137-26-8) application

The fungicide Tetramethylthiuram Disulfide is used as a seed treatment, soil treatment or spray. Use a dose of 0.125% (active ingredient) for seed dressing to prevent and control seedling blight and damping-off in cabbage, lettuce, melons, eggplants, broad beans, etc.; use a dose of 0.15~0.25% (active ingredient) for seed dressing to prevent and control rice seedlings. blight, cereal black spots, and pine seedling blight; 0.4% dose (active ingredient) in seed dressing to prevent and control pea and other blight diseases. Treat the soil with 3750~5625 grams of active ingredients per hectare (furrow application or hole application) to prevent and control seedling diseases of vegetables, tobacco, and sugar beets. 50% Tetramethylthiuram Disulfide wettable powder is sprayed with 500~800 times of water to prevent gray mold on strawberries, pear scab, potato and tomato late blight, downy mildew on melons and vegetables, grape anthracnose, white rot, etc. A variety of compound preparations have been produced, such as compounded with carboxin, compounded with thiophanate, trifamil (40% Tetramethylthiuram Disulfide, 20% Tetramethylthiuram Disulfide, 20% Tetramethylthiuram Disulfide), (1.2% Tetramethylthiuram Disulfide, 0.6% thiamine, 0.6% thiamine), etc. The compound seed dressing agent is a good seed dressing agent that can replace mercury preparations. 40% seed dressing wettable powder contains 20% Tetramethylthiuram Disulfide and 20% seed dressing. The seed dressing spirit is a systemic fungicide. Its properties: The pure product is white powder, with a melting point of 222~224℃ and a decomposition temperature of 270~285℃. It is insoluble in water, has low solubility in general organic solvents, and is easily soluble in dimethylformamide. It forms salts with acids and is relatively stable to alkali. Acute oral LD50: 820 mg/kg for male rats, 817.9 mg/kg for female rats, 392 mg/kg for male mice, and 564 mg/kg for female mice. Rat acute transdermal LD50》3200 mg/kg. No obvious accumulation effect. No teratogenic effects were found in tests on rats and mice. After the two drugs are combined, not only the toxicity is reduced, but also the effect of preventing and controlling diseases is better than using Seed Dressing Spirit or Tetramethylthiuram Disulfide alone, and the safety of crops is higher than Seed Dressing Spirit. The acute oral LD50 of 40% Kezhong double wettable powder is 3830 mg/kg for male rats and 3160 mg/kg for female rats. For every 100 kg of seeds, 40-80 g of double active ingredients should be used for seed dressing to prevent and treat wheat smut; use Use 120 to 200 grams of active ingredients in seed dressing to prevent and control sorghum smut; use 200 grams of active ingredients in seed dressing to prevent and control cotton seedling diseases; use 2500 mg/L liquid in seed dressing to prevent and control kenaf anthracnose.

The fungicide Tetramethylthiuram Disulfide foliar spray can be used to control grape white rot and grape downy mildew: To control grape white rot, in the early stage of the disease, spray 50% Tetramethylthiuram Disulfide wettable powder 600 to 800 times, every 12 to 15 days Spray once and stop spraying half a month before harvest. To prevent and control grape downy mildew, spray 50% Tetramethylthiuram Disulfide wettable powder 600 times or 70% Tetramethylthiuram Disulfide wettable powder 500 to 1000 times before the onset of the disease. Spray once every 7 to 10 days, during the first half of harvest. Stop spraying.

50% azoxystrobin · Tetramethylthiuram Disulfide wettable powder: It is also effective against fruit diseases such as white rot, anthracnose, and gray mold, as well as downy mildew, cob brown blight, and black pox. Use 1500 times the solution. Use 1500 times the solution during the inflorescence separation period, after flowers fade, and before and after bagging. The interval between applications is 12 to 15 days, and the safety interval is half a month.

Tetramethylthiuram Disulfide (137-26-8) uses

The fungicide Tetramethylthiuram Disulfide is mainly used to treat downy mildew, blight, anthracnose, cereal smut, seedling yellow wilt, etc. Generally, to prevent and treat apple black spot disease and pear black spot disease, 500 grams of 50% wettable powder can be mixed with 250-400 kilograms of water and sprayed evenly. To prevent and control rice blast, flax leaf spot, and damping off, 0.5 kg of 50% wettable powder can be used for every 100 kg of seeds.

Tetramethylthiuram Disulfide is a broad-spectrum protective fungicide with a residual effect period of about 7 days. It is mainly used to treat seeds and soil, prevent and control powdery mildew, smut, and rice seedling blight of cereal crops. It can also be used for some fruit tree and vegetable diseases. If 50% wettable powder is used for seed dressing, it can prevent and control rice blast, rice and flax leaf spot, and barley and wheat smut. Usage: This product is commonly called Tetramethylthiuram Disulfide as a pesticide. It is mainly used to treat seeds and soil to prevent and control cereal powdery mildew, smut and vegetable diseases. As a super accelerator for natural rubber, synthetic rubber and latex, this product is usually called accelerator TMTD. It is the representative of thiuram vulcanization accelerator, accounting for 85% of the total volume of similar products. As a super accelerator for natural rubber, diene synthetic rubber, II, R, and EPDM, it is the one with the highest utilization rate. The vulcanization promotion force is very strong, but when there is no zinc oxide, it will not vulcanize at all.

The fungicide Tetramethylthiuram Disulfide is suitable for natural rubber, synthetic rubber, latex, and can be used as a vulcanizing agent. This product is an excellent second accelerator for thiazole accelerators and can be used together with other accelerators as an accelerator for continuously vulcanized rubber compounds.

It is used as a super vulcanization accelerator in the rubber industry, often used together with thiazole accelerators, and can also be used with other accelerators as an accelerator for continuous rubber materials. Because it slowly decomposes free sulfur above 100°C, it can be used as a vulcanizing agent. The products have excellent aging resistance and heat resistance. Suitable for natural rubber and synthetic rubber. Mainly used in the manufacture of tires, inner tubes, rubber shoes, cables and other industrial products. It is used as a fungicide and insecticide in agriculture and can also be used as a lubricant additive.

How to use Tetramethylthiuram Disulfide (137-26-8)

1. Prevention and control of cotton seedling diseases: Mix 300 grams of 50% wettable powder with 100 kilograms of cotton seeds, add appropriate amount of water, shake thoroughly and sow immediately.

2. Prevention and control of tobacco and beetroot root rot, tomato and cabbage black swollen disease, melon damping-off, and yellow wilt. Use 100 grams of 50% wettable powder to treat 500 kilograms of soil for greenhouse seedbed treatment.

3. Prevention and treatment of apple black spot disease and pear black spot disease: Use 500 grams of 50% wettable powder, mix with 250-400 kg of water, and spray evenly.

4. Prevention and control of rice blast, flax leaf spot, and damping off: Use 0.5 kg of 50% wettable powder for every 100 kg of seeds.

5. Prevention and treatment of wheat smut, corn and sorghum smut: Use 0.5 kg of 50% wettable powder for every 100 kg of seeds.

Tetramethylthiuram Disulfide (137-26-8) usage technology

1. Fruit tree disease prevention and control of grape white rot

When the disease in the lower ear begins, start spraying 50% wettable powder 600-800 times, once every 12-15 days, until half a month before harvest. Using too high a concentration may cause phytotoxicity.

2. Prevention and treatment of bacterial perforation diseases of peaches and plums

At the early stage of the disease, start spraying 50% wettable powder 500-800 times, once every 12-15 days, and spray 3-5 times continuously.

3. Prevent and control apple tree rot disease

Apply 300 to 500 grams of 10% ointment per square meter.

3. Prevention and treatment of plum gray mold

Spray 50% wettable powder 500-800 times once each during the flowering and young fruit stages.

4. Prevent and control blight of citrus and other fruit tree seedlings

Use 8 to 10 grams of 50% wettable powder per square meter of seedbed, mix well with 10 to 15 kilograms of fine soil, 1/3 is used as cushion soil, and 2/3 is used to cover soil after sowing.

Before winter, apply 8 times the solution of 50% wettable powder to the trunks of citrus, peach and other fruit trees to prevent gnawing by rabbits and mice.

5. Vegetable diseases Seed dressing is used to prevent and control seed-borne seedling diseases

Such as cruciferous, solanaceous, melon and other vegetables seedling blight and damping-off disease, as well as cabbage black spot, melon scab, lettuce downy mildew, bean anthracnose, pea brown spot, green onion purple spot For diseases such as smut and smut, use 0.3% to 0.4% of the seed amount with 50% wettable powder for seed dressing.

6. Treat seedbed soil to prevent seedling diseases, blight and damping-off.

Use 8 grams of 50% wettable powder per square meter and mix it with 20 kilograms of fine soil. Use 1/3 of the poisonous soil as a base when sowing, and cover it with the remaining 2/3 of the poisonous soil after sowing.

7. Prevention and treatment of smut on green onions and onions

After pulling out the diseased plants, use 50% wettable powder and 80 to 100 times fine soil mixed with poisonous soil, and spread it on the diseased points.

8. Spray with 500-800 times of 50% wettable powder to prevent downy mildew, powdery mildew, anthracnose of cabbage and melons, tomato late blight, early blight, leaf mold, vegetable gray mold, etc.

9. Food crop diseases: Seed dressing is used to prevent and control rice blast, flax leaf spot, rice seedling blight, and rice bakanae disease.

Dress the seeds with 250 grams of 50% wettable powder for every 50 kilograms of seeds or soak the seeds with 500-1000 times of 50% wettable powder for 2-3 days.

10. Prevention and control of corn smut and sorghum anthracnose

Use 250 grams of 50% wettable powder for every 50 kilograms of seeds.

11. Prevention and treatment of millet smut

Use 150 grams of 50% wettable powder for every 50 kilograms of seeds.

12. Prevention and treatment of wheat blight

Use 250 grams of 50% wettable powder per mu, mix with 15 to 25 kilograms of fine soil, and spread it.

13. Prevention and treatment of wheat smut, root rot, stem blight, and barley smut

Use 150 to 250 grams of 50% wettable powder for every 50 kilograms of seeds.

14. Control wheat scab, snow mold leaf blight, leaf and ear rot of root rot, and powdery mildew.

Spray with 50% wettable powder 500 times liquid.

15. Oil crop diseases: Seed dressing is used to prevent and control rapeseed blight, white spot, damping-off, fusarium wilt, and black shank.

Use 125 grams of 50% wettable powder for every 50 kilograms of seeds. Spray to control downy mildew and black rot of rapeseed. Spray 50% wettable powder 500-800 times 50-75 kg per mu, every 5-7 days, spray 2-3 times in total.

16. Prevention and treatment of soybean blight, black spot, brown spot, and purple spot

Use 150 grams of 50% wettable powder for every 50 kilograms of seeds.

17. Prevent and control soybean downy mildew and brown spot disease

In the early stage of the disease, spray 50% wettable powder 500-1000 times, 50kg per mu, once every 15 days, for a total of 2-3 times.

18. Prevent and control peanut crown rot

Use 100 grams of 50% wettable powder for every 50 kilograms of seeds.

19. Prevention and treatment of sesame stem blight,

Use 150 grams of 50% wettable powder for every 50 kilograms of seeds.

20. Prevent and control beet blight and root rot

Use 400g of 50% WP for every 50kg of seeds; if 200-400g of 50% Tetramethylthiuram Disulfide WP and 200-350g of 70% Tetramethylthiuram Disulfide WP are used for seed dressing per 50kg of seeds, it will prevent Disease effect is better. To prevent and control root rot, pesticides can also be made into poisonous soil and applied in ditches or holes.

21. Tobacco Disease Prevention and Control of Tobacco Root Rot

Use 500 grams of 50% wettable powder for every 500 kilograms of hotbed soil to treat the soil. To prevent and control tobacco black rot, use 500 times of 50% wettable powder to irrigate in the early stage of the disease, with 100 to 200 ml of liquid for each plant. To prevent and treat tobacco anthrax, spray 50% wettable powder 500 times in the early stages of the disease.

22. Prevention and treatment of cotton black root disease and ring spot disease

Use 200 grams of 50% wettable powder for every 50 kilograms of seeds.

23. Prevention and treatment of flax and flax wilt diseases

Use 100 grams of 50% wettable powder for every 50 kilograms of seeds. Nowadays, seed dressing is often used instead of Tetramethylthiuram Disulfide.

24. Prevention and treatment of black spot disease of Adenophora ginseng

Use 150 grams of 50% wettable powder for every 50 kilograms of seeds.

25. Prevention and treatment of yam spot disease

Start spraying 50% wettable powder 500-600 times before the onset of the disease or at the beginning of the disease, once every 7-10 days, and spray 2-3 times in total.

26. Flower disease control: Fusarium wilt and leaf spot of gladiolus

Before planting, soak the bulbs with 50% wettable powder 70 times for 30 minutes before planting.

27. Prevention and treatment of snapdragon leaf blight

Use 50% wettable powder with 0.2% to 0.3% seed content for seed dressing.

28. Prevent and control blight that damages chrysanthemums and other flowers.

Use 500 grams of 50% wettable powder per mu of seedbed, mix it with poisonous soil and spread it into the soil, or use 100 grams per mu and add 50 kilograms of water to water the roots, and pour 500 ml of chemical solution per plant.

29. Prevent and control white silk disease that damages orchids, clivias, tulips, marigolds and other flowers.

Use 5 to 10 grams of 50% wettable powder per square meter, mix into poisonous soil, and then withdraw it into the soil, or apply it to the planting hole before planting.

30. Prevent and control pine seedling blight

Use 250 grams of 50% wettable powder for every 50 kilograms of seeds.

Tetramethylthiuram Disulfide (137-26-8) prevents and treats diseases

(1) Fruit tree diseases prevention and control of grape white rot. When the disease in the lower ear begins, start spraying 50% wettable powder 600-800 times, once every 12-15 days, until half a month before harvest.

To prevent and treat peach and plum bacterial perforation diseases, start spraying 50% wettable powder 500-800 times at the early stage of the disease, spray once every 12-15 days, and spray 3-5 times continuously.

To prevent and control apple tree rot, apply 300 to 500 grams of 10% ointment per square meter.

To prevent and control gray mold, spray 50% wettable powder 500-800 times once each during the flowering and young fruit stages.

To prevent and control blight of fruit tree seedlings, use 8 to 10 grams of 50% wettable powder per square meter of seedbed, mix well with 10 to 15 kilograms of fine soil, 1/3 is used as cushion soil, and 2/3 is used to cover soil after sowing.

Before winter, apply 8 times the solution of 50% wettable powder to the trunks of citrus, peach and other fruit trees to prevent gnawing by rabbits and mice.

(2) Vegetable diseases Seed dressing is used to prevent and control seed-borne seedling diseases. Such as cruciferous, solanaceous, melon and other vegetables seedling blight and damping-off disease, as well as cabbage black spot, melon scab, lettuce downy mildew, bean anthracnose, pea brown spot, green onion purple spot Diseases and smut, etc., use 0.3% to 0.4% of the seed content with 50% wettable powder for seed dressing.

Treat the seedbed soil to prevent seedling diseases, damping off and damping-off. Use 8 grams of 50% wettable powder per square meter, mix it with 20 kilograms of fine soil, use 1/3 of the poisonous soil as a base when sowing, and use it after sowing. The remaining 2/3 is covered with poisonous soil.

To prevent and control smut on green onions and onions, after pulling out the diseased plants, use poisonous soil mixed with 50% wettable powder and 80 to 100 times fine soil, and spread it on the diseased points.

Spray with 500-800 times of 50% wettable powder to prevent downy mildew, powdery mildew, anthracnose of cabbage and melons, tomato late blight, early blight, leaf mold, vegetable gray mold, etc.

(3) Seed dressing for food crop diseases to prevent rice blast, flax leaf spot, rice seedling blight, and rice bakanae disease. Use 250 grams of 50% wettable powder for every 50 kilograms of seeds or use 50% wettable powder for seed dressing. Soak seeds in 500-1000 times liquid for 2-3 days.

To prevent corn smut and sorghum anthracnose, use 250 grams of 50% wettable powder for every 50 kilograms of seeds.

To prevent and control millet smut, use 150 grams of 50% wettable powder for every 50 kilograms of seeds.

To prevent wheat blight, use 250 grams of 50% wettable powder per mu, mix with 15 to 25 kilograms of fine soil, and spread it.

To prevent and control wheat smut, root rot, and stem blight, and barley smut, use 150 to 250 grams of 50% wettable powder for every 50 kilograms of seeds.

To control wheat scab, snow mold leaf blight, root rot, leaf and ear rot, and powdery mildew, spray 50% wettable powder 500 times.

(4) Oil crop diseases: To prevent and control rapeseed damping-off, white spot, damping-off, fusarium wilt, and black shank, use 125 grams of 50% wettable powder for every 50 kilograms of seeds. Spray to control downy mildew and black rot of rapeseed. Spray 50% wettable powder 500-800 times 50-75 kg per mu, every 5-7 days, spray 2-3 times in total.

To prevent and control soybean blight, black spot, brown spot, and purple spot, use 150 grams of 50% wettable powder for every 50 kilograms of seeds. Control soybean downy mildew and brown spot. In the early stage of the disease, spray 50% wettable powder 500-1000 times, 50kg per mu, once every 15 days, for a total of 2-3 times.

To prevent and control peanut crown rot, use 100 grams of 50% wettable powder for every 50 kilograms of seeds.

To prevent and control sesame stem blight, use 150 grams of 50% wettable powder for every 50 kilograms of seeds.

(5) To prevent and control beet blight and root rot, use 400 grams of 50% wettable powder for every 50 kilograms of seeds; use 200 to 400 grams of 50% Tetramethylthiuram Disulfide wettable powder and 70% mold for every 50 kilograms of seeds. Mix 200-350 grams of Ling wettable powder for seed dressing, which has better disease prevention effect. To prevent and control root rot, pesticides can also be made into poisonous soil and applied in ditches or holes.

(6) Tobacco diseases To prevent and control tobacco root rot, use 500 grams of 50% wettable powder for every 500 kilograms of hotbed soil to treat the soil. To prevent and control tobacco black rot, use 500 times of 50% wettable powder to irrigate in the early stage of the disease, with 100 to 200 ml of liquid for each plant. To prevent and treat tobacco anthrax, spray 50% wettable powder 500 times in the early stages of the disease.

(7) To prevent cotton black root disease and ring spot disease, use 200 grams of 50% wettable powder for every 50 kilograms of seeds.

(8) To prevent and control flax and flax fusarium wilt, use 100 grams of 50% wettable powder for every 50 kilograms of seeds. Nowadays, seed dressing is often used instead of Tetramethylthiuram Disulfide.

(9) To prevent and control black spot disease of Adenophora ginseng, use 150 grams of 50% wettable powder for every 50 kilograms of seeds. To prevent and treat yam spot disease, spray 50% wettable powder 500-600 times before or at the beginning of the disease, once every 7-10 days, and spray 2-3 times in total.

(10) To control flower diseases: Fusarium wilt and leaf spot (hard rot) of gladiolus, before planting, soak the bulbs with 70 times of 50% wettable powder for 30 minutes before planting.

To prevent and control snapdragon leaf blight, use 50% wettable powder with a seed content of 0.2% to 0.3% for seed dressing.

To prevent and control damping-off disease that damages chrysanthemums and other flowers, use 500 grams of 50% wettable powder per mu of seedbed, mix the poisonous soil and spread it into the soil, or use 100 grams per mu and add 50 kilograms of water to water the roots, and pour 500 ml of pesticide solution per plant. .

To prevent and control white silk disease that damages orchids, clivias, tulips, marigolds and other flowers, use 5 to 10 grams of 50% wettable powder per square meter, mix it into poisonous soil, and evacuate it into the soil, or apply it to the planting hole. Planting.

(11) To prevent and control pine seedling blight, use 250 grams of 50% wettable powder for every 50 kilograms of seeds.

Tetramethylthiuram Disulfide (137-26-8) production method

Preparation of the fungicide sodium Tetramethylthiuram Disulfidein. Dimethylamine hydrochloride and carbon disulfide generate sodium dimethylaminodithiocarbamate (sodium Tetramethylthiuram Disulfidein) in the presence of sodium hydroxide. The reaction temperature is 50 to 55°C and the pH value is 8 to 9. Preparation of Tetramethylthiuram Disulfide sodium (or Tetramethylthiuram Disulfideinium) and hydrogen peroxide in the presence of sulfuric acid to generate Tetramethylthiuram Disulfide, the temperature is controlled below 10°C, and the end-point pH value is 3 to 4. Chlorine gas can also be used instead of hydrogen peroxide and sulfuric acid. The reaction is carried out in a sieve plate tower. The chlorine gas is diluted and enters from the bottom of the tower. A 5% sodium phenyl solution is sprayed on the top of the tower, which is called chlorine-air oxidation method. Sodium nitrite oxidation method or electrolytic oxidation method can also be used.

Precautions for Tetramethylthiuram Disulfide (137-26-8)

1. Do not mix with copper, mercury and alkaline pesticides or use them in close succession.

2. The seeds mixed with medicine have residual poison and cannot be eaten anymore. It has an irritating effect on the skin and mucous membranes, so be careful when spraying.

3. When Tetramethylthiuram Disulfide is used on fruit trees, especially grapes, the dosage should be strictly in accordance with the instructions for use. If the concentration is too high, phytotoxicity may easily occur.

4. Tetramethylthiuram Disulfide is toxic to fish but non-toxic to bees. When applying pesticides, be careful to avoid fish ponds and other fish farms.

Fungicide Tetramethylthiuram Disulfide (137-26-8) price

Under normal circumstances, the price of pesticide and fungicide Tetramethylthiuram Disulfide will be affected by raw materials, market environment, research and development costs, etc. If you want to know the latest price of the pesticide and fungicide Tetramethylthiuram Disulfide you need, please contact us to initiate an inquiry.

Tel: 13563082345 Email: sales@agripesticide.com

Fungicide Tetramethylthiuram Disulfide (137-26-8) supplier

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